航空制造企业生产系统的不稳定、非平衡性增加了生产调度的复杂性,应用多层混合规划和Agent实现生产调度系统,提出了虚拟动态管理单元和基于其形成的车间控制结构,将时间等各种因素转化为成本因素,建立了多层混合规划的生产调度模型,给...航空制造企业生产系统的不稳定、非平衡性增加了生产调度的复杂性,应用多层混合规划和Agent实现生产调度系统,提出了虚拟动态管理单元和基于其形成的车间控制结构,将时间等各种因素转化为成本因素,建立了多层混合规划的生产调度模型,给出了生产调度过程中的任务分配过程以及任务分配过程中应用的一些规则。将生产调度中的实体映射为Agent,并基于JADE(javaagent development framework)给出系统实现,针对某航空制造企业车间生产调度进行了应用,给出了系统运行中的几个重要参数的取值范围,验证了方法的有效性。展开更多
Virtual Reality provides a new approach for geographical research. In this paper, a framework of the Virtual Huanghe （Yellow） River System was first presented from the view of technology, which included five main mo...Virtual Reality provides a new approach for geographical research. In this paper, a framework of the Virtual Huanghe （Yellow） River System was first presented from the view of technology, which included five main modules——data sources, 3D simulation terrain database, 3D simulation model database, 3D simulation implementation and application system. Then the key technoiogies of constructing Virtual Huanghe River System were discussed in detail： 1） OpenGL technology, the 3D graphics developing instrument, was employed in Virtual Huanghe River System to realize the function of dynamic real-time navigation. 2） MO and OpenGL technologies were used to make the mutual response between 3D scene and 2D electronic map available, which made use of the advantages of both 3D scene and 2D electronic map, with the macroscopic view, integrality and conciseness of 2D electronic map combined with the locality, reality and visualization of 3D scene. At the same time the disadvantages of abstract and ambiguity of 2D electronic map and the direction losing of virtual navigation in 3D scene were overcome.展开更多
文摘航空制造企业生产系统的不稳定、非平衡性增加了生产调度的复杂性,应用多层混合规划和Agent实现生产调度系统,提出了虚拟动态管理单元和基于其形成的车间控制结构,将时间等各种因素转化为成本因素,建立了多层混合规划的生产调度模型,给出了生产调度过程中的任务分配过程以及任务分配过程中应用的一些规则。将生产调度中的实体映射为Agent,并基于JADE(javaagent development framework)给出系统实现,针对某航空制造企业车间生产调度进行了应用,给出了系统运行中的几个重要参数的取值范围,验证了方法的有效性。
基金Under the auspices of the Science Data Sharing Pilot Project of Ministry of Science and Technology of China (No. 2003DEA2C010), Natural Science Fund of Henan University on Virtual City Construction Method (No. 04YBRW026)
文摘Virtual Reality provides a new approach for geographical research. In this paper, a framework of the Virtual Huanghe （Yellow） River System was first presented from the view of technology, which included five main modules——data sources, 3D simulation terrain database, 3D simulation model database, 3D simulation implementation and application system. Then the key technoiogies of constructing Virtual Huanghe River System were discussed in detail： 1） OpenGL technology, the 3D graphics developing instrument, was employed in Virtual Huanghe River System to realize the function of dynamic real-time navigation. 2） MO and OpenGL technologies were used to make the mutual response between 3D scene and 2D electronic map available, which made use of the advantages of both 3D scene and 2D electronic map, with the macroscopic view, integrality and conciseness of 2D electronic map combined with the locality, reality and visualization of 3D scene. At the same time the disadvantages of abstract and ambiguity of 2D electronic map and the direction losing of virtual navigation in 3D scene were overcome.
